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Gr, somewhat regretting that we leaned into `interpreter_constraints` using a list to OR constraints, like `['==2.7.*', '&gt;3.6']`. Poetry needs a single constraint, and I don't know of a way to programmatically convert the list into a single value

John warned us this is non-standard and might bite us in the future :thinking_face:

I think there's an inelegant solution. We now have a notion of "python_universe". Iterate over every version in our universe and see if it's contained. If so, add it to our new synthetic constraint

Very similar to how partion_by_major_minor_versions worked

should <https://github.com/pantsbuild/pants/pull/12515> wait for this to be resolved…?

Yeah I can wait to hit merge. I don't think partitioning will help a ton: we do not want to run Poetry mutliple times because then we need a way to merge everything. But, no rush to hit merge